I need to combine the results from two queries into one result set and order them altogether.

This is the working, raw SQL code I have:

SELECT * FROM (
    SELECT
      t1.id AS entity_id,
      t2.title,
      'query1' AS entity_type
    FROM
      `table1` t1,
      `table2` t2
    WHERE
      t1.id = t2.id
  UNION ALL
    SELECT
      t3.id AS entity_id,
      t4.title,
      'query2' AS entity_type
    FROM
      `table3` t3,
      `table4` t4
    WHERE
      t3.id = t4.id
) AS results ORDER BY results.entity_id

The query above works perfectly, but I need to convert it into a specific syntax for a CMS database API, which does not support such queries.

I am looking for something without the SELECT * FROM(subquery) as such queries can be converted easily.

Is there any command I can use to UNION ALL and order records from both sub-queries?

Thank you!